Safe and non-toxic: Made of high quality non-toxic mineral material, with high temperature sintering, the aquarium bubble stone is safe, sturdy and durable, which can produce even and tiny bubbles. Provide l oxygen: connect it to the air pump and put it in the water, so that the air pump can pump oxygen into the water. High oxygen dissolving rate : It produces fine bubbles, which makes it effective in replacing oxygen in fish ponds, tanks or hydroponic systems. Air blue stone can produce smaller and denser bubbles. Easy to clean: can be washed and used repeatedly for a long time. If the aquarium air bubble stone is covered or blocked by algae and impurities, just clean it with a brush, very convenient. Wide Application: Ideal for freshwater and saltwater. Can be used to transport oxygen to fish and other living things, in fish tank, pond, fish tank, hydroponic farm, water farms and other places. Suitable for aquarium, aquarium Size: 4cm x 1.5cm x 2.5cm (see image below for details)
